[Tagging] new access value

Florian Lohoff f at zz.de
Tue Oct 6 19:41:14 UTC 2015

On Tue, Oct 06, 2015 at 08:54:09PM +0200, Friedrich Volkmann wrote:
> On 06.10.2015 19:31, Florian Lohoff wrote:
> >> So if "destination" excludes off-wanderers and sightseers, what tag do you
> >> use when you need to include them?
> > 
> > Whats the possible signage which can induce that?
> "no through traffic"
> "no thru traffic"
> "local traffic only"

Sorry - no - All of them are *=destination.

If you include them? What would be the legal sign? I know
of none. You can put up signs which say - "Redheads only on
mondays" but thats nothing OSM could or should follow.
Simplification - make it a permissive/private ...

> In Austria:

> Fahrverbot + Zusatztafel "Zufahrt gestattet"
	motor_vehicle=customer/destination/permissive/private depending
	on use case
> Fahrverbot + Zusatztafel "ausgenommen Ziele in..."
	Do you have pictures of something like this?
> "Durchfahrt verboten"
	motor_vehicle=destination or vehicle=destination - depends on
	what is beeing ment. Might also be a access=private. Varys 
	on location and usage.
> "Durchgang verboten"

> The latter two are no traffic signs in terms of StVO, but they are valid
> anyway due to other laws such as ABGB.

You need to accept simplification - there is NO WAY in the world we can
accurately a) tag all ways with any combination of blurp and make b) all
data consumers "do the right thing". 

A lot of signs in the countryside are complicated but are only
interesting for locals e.g. the farm 500m away. Why should i tag this
when then audience is about 2-3 People and there are 400 Programmers
which need to fix all data consumers?

When there is a sign saying - "No vehicle access accept for housenumber
12" you CANT put this in attributes. So the next valid tagging is
vehicle=no - People living in house number 12 might possibly know
they are allowed so there is no need to put this in the data.

My suggestion is you take some photographs with the mapillary app and
we talk through real not artifical examples.

I think the access stuff in OSM is very rich of its possibilities and we
today already have problems to interpret all those combinations and
we see "misbehaviour" in all routing apps concerning different
interpretation of tags - so we need to simplify.

PS: https://xkcd.com/927/
Florian Lohoff                                                 f at zz.de
     We need to self-defense - GnuPG/PGP enable your email today!
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